Tire for mine locomotive wheels



NOV. 17, 1936. H 2,061,324

TIRE FOR MINE LOCOMOTIVE WHEELS Origingl Filed Dec. 27, 1932 2 Sheets-Sheet l 6- Z, lm czeaz, F Bra/Mack Nov. 17, 1936. G. MICHEAL ET AL 2,061,324

TIRE FOR MINE LOCOMOTIVE WHEELS Original Filed Dec. 27, 1932 2 Sheets-Shet 2 L. Micfieal j Brunabwck.

Patented Nov. 17, 1936 UNITED STATES PATENT ()FFICE TIRE FOR MINE LOCOMOTIVE WHEELS George L. Micheal and Price Brumbach, Harlan,

Ky.; said Micheal assignor to R. B. Maw, Pineville, Ky.

Application December 27, 1932, Serial No. 649,093 Renewed April 11, 1936 8 Claims. (01. 29515) This invention relates to mine car wheels and ceive an axle. The device comprises two units, more particularly to a novel form of tire especialthe member 8 constituting the tire for applicaly adapted for application to the wheels of mine tion to the rim 6 of the wheel and the member 9 locomotives. a tread adapted to fit over the tire member, as

In coal mine haulage, the treads of motor wheels shown. The tire B is provided at its inner end 5 Wear rapidly, due to sanding of the tracks to with a radially extended circumferential flange increase friction, and as the treads of the wheels t, the inner time Of Which is preferably thickare much wider than the track rails the wear ened at H and inclined in opp o s, a8 manifests itself in the form of a groove or chanshown at l2, thereby to reinforce and strengthen o nel in the tread next to the gauge flange, leaving the inner face of the flange and provide a smooth 10 a circumferential ridge which hammers and muunobstructed surface he periph ry f th fl n 'lates the switch frogs and otherwise causes dam- 0 s ned 0r Ot erwise formed with a transage t the t k, versely fiat peripheral edge l3 while the outer The object of the present invention is to proportion 0f the flange is p v t a t a t vide a tire for the whee1s of mine loc motives surface It which extends to and intersects the 15 which will effectually overcome these objectionadjacent outer face of the tire. Fitted on the tire able features and in which the tread and rail 8 i he tre d p r n 9 v n a rail en in engaging flange may be readily removed and reflange projecting therefrom and P efe ab y newed when desired at ery little cost, thereby formed integral therewith, the inner face 0f the extending the effective life of the wheel and obfla e I6 and the adjacent Portion of h tread 2o viating the expense of replacement of an entirely being provided with a circumferential e t, I! n w h l, adapted to receive the terminal flange Ill. The

A further object is to provide a tire formed i seat I! extends continuously around the inner face two sections, one of which is provided with a cir- 0f t ad 9 a d defines a shoulder l8 which cumferential seat adapted to receive a correoverlaps and bears against the transversely fl spondingly shaped rib on the other section whereperipheral edge 0f the terminal flange 0f t e by the sections are interlocked and lateral movetire- The inner a of e r en aging flange ment of one relative to the other effectually preis preferably inclined t Con orm to and forms t d, a continuation of the inclined face I2 of the flange A 11 further object of t invention is gen- I0 so that a smooth joint is formed at the junction erally to improve this class of devices so as to in- Of the Shoulders and and 110 Surface p crease their utility, durability and efiiciency. jections are presented at the inner face of the In the accompanying drawings forming a part wheel. The tire 8 is preferably formed with a of the specification: medial circumferential rib l9 which engages a Figure 1 is an end elevation of a mine locomorrespondingly Shaped groove 01 Channel 20 tive wheel embodying the present, invention formed in the lower face of the tread portion 9 S0 Figure 2 is a, vertical section thereof, that when the tread portion is heated and fitted Figure 3 i perspective i showing th two over the tire and then allowed to shrink, the rib units comprising the sectional tire detached and and groove will interlock and thus effectually pre- 4o ready to be assembled. vent lateral displacement of the tread. Owing 40 Figure 4 is a vertical sectional view illustrating to the formation of the seat H, the tread portion a modified form of the invention with the interwill have a shrinking fit with the tire 8 at the locking tongue and groove omitted. straight face l5 of the terminal flange and at the Figure 5 is an end view of a further modificaouter face of the tire proper and this shrinking fit tion. is, of course, supplemented by the action of the 45 Figure 6 is a vertical sectional view of Figure 5. rib and groove connection between the tire and Similar numerals of reference indicate corretread. sponding parts in all the figures of the drawings. In assembling the sections, the tread portion 9 The improved two-part tire forming the subis heated and then slipped over the tire portion ject matter of the present invention is particularly 8 and as the tread portion cools the metal will 50 designed for application to the wheels of mine shrink and thereby not only produce a shrinking locomotives and the like andby Way of illustration fit at the points previously mentioned but also is shown in connection with suchawheel in which cause the locking rib to fit snugly within the 5 designates the wheel blank having a rim 6 and channel or groove in the tread portion. When a centrally disposed opening 1 adapted to rethe parts are thus assembled they may be se- 55 cured in position on the rim of. the wheel blank by heating and shrinking the same thereon or in any other suitable or preferred manner. It will thus be seen that should a groove or channel form in the tread surface of the member 9, due to constant use of the wheel on sanded rails, the tread portion, including the rail engaging flange l6, may be readily removed and renewed at very little expense and without the necessity of providing an entirely new wheel.

In Figure 4 of the drawings there is illustrated a modified form of the invention in which the rib and groove are omitted, the tread 9' being retained in position on the tire 8 solely by the shrinking fit between the terminal flange Ill and the adjacent portion of the tread and between the tread and tire. In certain cases we have found this'form of device very desirable and it will, therefore, be understood that the tires may be constructed with or without the interlocking rib and groove without departing from the spirit of the invention.

In Figures 5 and 6 there is illustrated a further modification in which the rail engaging flange 2| is formed on the inner portion of the tire proper instead of on the tread and the tread 9" bears directly against the inner face of the rail engaging flange 2|. In this form of the device the interlocking rib and groove are preferably employed to assist in preventing lateral displacement of the tread portion but it will be understood that they may be omitted if desired. It will furthermore be understood that instead of having the rib formed on the tire portion and the groove in the tread portion, these elements may be reversed, as the result accomplished is the same in both cases.

It will also be understood that while it is preferred to use the two units comprising the tire assembled on a wheel, as shown in the drawings, if desired, the wearing parts such as the tread and rail engaging flange may be applied directly to the rim of a wheel without using the tire proper.

Having thus described the invention, what we claim is:

1. A device of. the class described comprising a wheel body, a tire fitting over said body and having a terminal radially extended circumferential flange the peripheral edge of which is flattened transversely, a removable tread member having an integral rail engaging flange, the inner face of which is formed with a seat adapted to receive the terminal flange and defining an angular circumferential shoulder overhanging and bearing against the flat peripheral edge of the terminal flange whereby to form a step joint between the parts.

2. A device of the class described comprising a tire having one end thereof provided with a radially extended terminal flange, the inner face of which is thickened and outwardly beveled, a tread member having an integral rail engaging flange the inner face of which is formed with a circumferential seat adapted to receive the terminal flange and defining an annular shoulder overhanging and fitting against the peripheral edge of the terminal flange, the inner face of the rail engaging flange being inclined to conform to and forming a continuation of. the beveled face of the terminal flange.

3. A .device of the class described comprising a tire having a terminal radially extended flange, the outer face of which is straight and intersects the periphery of the tire, said terminal flange having its inner face thickened and inclined in opposite direction, and a tread member fitted to the tire and having an integral rail engaging flange, the inner face of which is formed with a seat adapted to receive the terminal flange with the straight face of the terminal flange bearing against the adjacent face of the tread member.

4. A device of the class described comprising a wheel body, a tire fitting over said body and having a radially extended circumferential flange provided with a straight outer face, and a removable tread member fitted to the tire and provided with a seat extending over the flange and adapted to receive the same and having a straight face for contact with the straight outer face of said flange whereby to form a step joint between the parts.

5. A device of the class described comprising a wheel body, a tire fitting over said body and having a terminal radially extended flange, and a removable tread member fitted to the tire and provided with a rail-engaging flange having a circumferential seat adapted to receive the terminal flange and defining an angular circumferential shoulder overlapping and bearing against the peripheral edge of said terminal flange whereby to form a step joint between the parts.

6. A device of the class described comprising a wheel body, a tire fitting over said body and having a terminal radially extended circumferential flange and an annular locking rib spaced from said flange, and a removable tread member having a circumferential seat adapted to receive the terminal flange and provided with an annular groove receiving the rib, said seat defining an angular circumferential shoulder overlapping and bearing against the peripheral edge of said terminal flange whereby to form a step joint between the parts.

7. A device of the class described comprising a Wheel body, a tire fitting over said body and having one end thereof provided with a radially extended terminal flange, and a removable tread member fitted upon the tire and provided with an integral rail-engaging flange having a circumferential seat adapted to receive the terminal flange and provided with a straight face bearing directly against the outer straight face of the terminal flange to form a step joint, said tread member having a shrinking fit at said seat and at the periphery of the tire.

8. A device of the class described comprising a wheel body, a tire fitting over said body and having one end thereof provided with a radially extended terminal flange having a straight outer face and its periphery formed with an annular rib between said flange and the other end of said tire, and a removable tread member having an integral rail-engaging flange overlapping the terminal flange and provided with a seat adapted to receive the terminal flange, said seat being provided with a straight face contacting with the straight outer face of the terminal flange to form a step joint, there being a circumferential groove formed in the inner face of the tread member adapted to receive said rib.

GEORGE L. MICHEAL.

' PRICE BRUMBACI-I. 

